Indicator alarm device.



Patented July 6', 1915.

1 SHEETS-SHEET! w a zn,

B. H. JEFFE R INDICATOR ALARM APPLICATION F-ILED oc.. 914.

1 Patented 6,

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'nnmmrn H.'JE1?FERSON, or cnrcaco, ILLINOIS, ASSIGNOR T HARRY H. KING,

I transmit, or cnronco, rumors.

INDICATOR ALARM DEVICE.

' Specification of Letters Patent.

Patented July 6, 1915.

Application filed October 9, 1914. Serial No. 865,784.

- My invention relates to an indicator and alarm device whereby an audible alarm will be made,.after the lapse of apredetermined period of time, less than one hour, for which the device may previously have been set.

One of the objects of my-invention is to provide, in association withan ordinary clock' mechanism, means for causing an audible alarm to become effective after the lapse of a predetermined period of time, for

' 'Which an index or hand has been set, by 29 turning it backwardfrom an objective point, "as'for instance, from the point usually indi cated on. clock dials by the Roman numeral I XII, whereby to vary the period of time to elapse from the set point to the objective $5 point.

. 1 Another object of my invention is to rovide a. silent zone on the dial into whic i to manually 'move the index hand to stop the fop'erationof the alarm mechanism and to 3 throw out the train of gearlng which serves :to move said hand from the set point to the objective point.

Another --object of my invention is to display upon the dial, arbitrary indicia,

3 such as the names of certain foods to be cooked, wherebyto indicate the time required to cook the respective foods, so that after the lapse of the respective periods of time, to which the hand may have been '40- previously moved, an alarm will be sounded to warn the cook that the period of time for which the device has been set, has expired. Another and further object of my inven- 'tionis to simplify and improve such mechanisms whereby to render 'them more efficient, certain of operation and more durable.

Other and further objects of-my inven- .tion will be readily apparent to persons skilled in the art from a consideration of the following description when taken in conjunction with the drawing, whe1'e1n' Figure 1 is a front elevatlonof the device. Fig. 2 is a side elevation with a part broken away, showing part of the mechanism within the casing. Fig. 3 is a rear elevation. Fig. 4 is an enlarged vertical section, taken on line H of Fig. 2. Fig. 5

1s an enlarged fragmentary section, taken on llne 55 of Fig. i. Fig. 6 is an enlarged fragmentary transverse section, taken on llne 6-6 of Fig. 2. F ig.-7 is a detail of a portion of the device shown in Fig. 6. Fig.

8 is a detail of the alarm mechanism.

In all the views the same reference char- 6.5 acters are employed to indicate similar parts.

The device, preferably, includes a mecha- I nism 10, such as that of an ordinary' clock,

inclosed. in acasing 11, which is secured 10 to the back plate 22 of. the frame 12, in which is positioned a glass plate 13, and which covers the dial 14. The dial His divided circumferentially near' its periphery into sixty equal spaces or divisions indicat- 7!! ing minutes of the hour, over which an index, or hand 15, is'adapted to be manually rotated anti-clock-wise, by a knob 16, which passes through the plate 13. Below the axis of the index15 is another dial 17 which is shown to be imprinted on the dial 14 and which is adapted for the hour hand 18 and the minute hand 19, of an ordinary clock.

Supporting legs 2020 are secured to each side of the frame 12, and 'a leg 21 is secured to the rear portion of the casing 11, so that when the indicator rests upon these legs the face 14 has a slightinclination from the vertical. The plate 22 covers the back of the frame 12 and is held in place as by means of screws 23. The casing 11 of the clock, is secured to this plate and the sleeve and arbor which rotate the hour andminute hands 18 and 19 respectively pass through the plate and through the dial 14.

Secured to the plate 22 is a bracket 24, which supports the alarm bell. or gong 25, 4 and projecting through the casing 11 is an arm 26 which carries the bell hammer 27. The arbor 28 of the clock mechanism carries a minute hand 19 and the sleeve 29 carries the hour hand 18, which hands are clearly shown in Fig. 1. Secured to the arbor 28 is a gear wheel 30 and loosely pivoted to p the-arbor 28 is a plate 31. An arbor 32, which has bearings in the bracket 33 and in another bracket 33", carries on its front end the index 15, and the setting knob 16, whereby the said arbor 32 may be freely rotated by manual operation when the index *is turned anti-clockwise, 'Secured to the arbor or shaft 32,'is another gear wheel 34,

"ofthe same siaeand containing the same number of teeth as the gear'wheel 30. This gear wheel, 34 bears a laterally projecting pm 35, the oifice of which will be hereinafter more fully explained.

' -Loosely rotatable upon the v plate 31 isa gear wheel 36 which is in constant mesh with the gear wheel and which is adapted to be moved into mesh with the gear wheel 34 by the operation of the spring 37 when the pin on the gear wheel 34 is not clearly shown in 'nism, is mounted 2c and is in operative relation with the verge 1 42, the latter being connectedto the arm 26,

- the axis of the verge 42, as from the is another. lever, or arm 44, having a 28 I the in the ath of themovement of the plate- 31 i?! Pr. edge of the plateii l. is zanother piii 38., more 1g. p

The verge wheel 40,0f the alarm mechaupon a rotatable shaft 41 30, 34 36 being of the same dimensions,

' the arbor 32 will be rotated at the same num: of revolutions as will the minute arbor 28 of the clock mechanism when the gear wheels 34 and 36-are in mesh so that the index'15, in making one substantially com 'plete revolution, will travel at the same relative speed-as the minute. hand 19, of the clock mechanism. I

When the wheel .47 is in the positionshown ,in' Fig. 8, with respect to the end 45 Oi the lever 44, the-verge wheel 44 will vi- 56 can no longer be the rim, the verge 42 will.

brate the arm 26, carrying thehammer27, and-the saidhammer will strike the bell 25 a number of; strokes to roduce the desired alarm. But if the. w.. ee

overlie therim 46, o fb ret in d i si e thus be held in fixed relation withtli'e verge wheel 44 and moved upon its axis 43.

Assuming now that the gear wheels 34'and 7' 36' are in-meshirelation, as shownin Fig.- 4..

If the index, hand wise, and withitjthe shaft or arbor 32,.by meansof the knoby16, which projects beyond the lass covering theface of the device, the rotation ,f the wheel 34, whichis carried by the arbor 32, with relation to the wheel 36 such-as move the latter out of i ac th sefiec ,Proiecting' tram the;

147 be turned slightly, 8 te late al y de ected end- "45 f the lever shall pas olllts de tfln 15jbe turned anti-clock geared renuomaiththe time point.

relation therewith by moving the plate 31,-

' slightly against theyielding spring 37, but

if eifort be made to manually turn the index 15 in the opposite or clockwise direction, by means of the knob 16, the gear wheel 34 will cause a wedging in of the teeth of the gear wheel 36, and rotation can not thus be made in this direction, owing to the relation ofthe pivotal plate 31 with reference to the gear wheels 34 and 36. Now if the rimwheel 46.

be fixed upon the arbor 32 in such osition.

that the end 45 of the arm 44, will, all into the Bomb. 48 0i the Wheel 46, at thetime wh n the index. 15 is n vertical or alarm posrtioa, when it points'te the position usually indicated by the numeral X the notch 48 will permit theendf of. the lever44 to r e through the notch or .to pass'in as .1

and out beyond the rim 46 of the wheel 47,

alarm ill be sounded, be ause then'the thevibrating verge 44 will vibrate theham mer, which will strike the bell 25 a series of blows,"to cause an alarm.

When the index 15. arrives it the, oei tion stated, the pin 25, carried bythe gear wheel 34 is aboutto'make' contact with the plate 31, and push the plate laterally upon its pivot 28 so that the gear wheels 34 and 36 are thereby moved out of mesh, andthe f time mechanism ofthe clock will no'longer rotate the gear wheel34'and arbor 32, therefore, thehand 15 will remain in its vertical a position, but-the alarm. will continue to beg sounded Verge wheel 40.

Upon the axis 16 of the index 15, isina zone marked Alarm that'is tosay, this is the point at which the alarm will be sounded, when the terminal of the index hand 15 is within this zone; While the alarm is being sounded it. may be stopped by rotating the knob .16 to the right, thea-rbor 32 being now free, un-

for a predetermined'length of time; 1 p nd ng u on he haracter of. the spring,- and its environments, which operates the" dial' '14, it will be observed that the vertical point 0 immediately over the 'til' it occupies the zone marked Silent,

when the alarm will' cease,lbecause the notch 48 has been moved out from under the end I 45 of the arm-44: and the rim'46 will restra n. theoperation of the hammen the in ,dex has beenlmoved into the'silent zone the.

. pin. 35 carried by the wheel 34will thusbe caused to make contactfwith, magpie 38,.

I or prevent anyeflort to rotate theindex 1'5 farther to the right than thej zone marked c, i nttt-j .Wh nath index arrives-at the;

{whichproj acts from the plate" 31 to restrain verticalpoint, atgwhichithe' alarm] is pro;

.7 the clock an '.-moved antl- The use andoperation'of the device as.

duced, it ,isautQmaticalIj thrown out. of

4 mechanism oi A d,soremainsnntilfit-Ihas been l k; wise" beyond, the: im-1111.;

at the same relative speed as the minute hand 19, of the clock mechanism. When the index hand has arrived at the vertical point marked Alarm the alarm will be sounded and will call the attention of the operator" to the fact that the elapsed time has passed,

and the operator may then move the index 15 slightly tothe right, into thef sllent zone which' operation entirely-d1sconnects the index 15, and its moving mechanism 'fromthe' clock mechanism.

For convenience of inexperienced cooks,

each of the minutes, of the dial 14, may

have associated therewith the name of some food or foods to advise the cook of the time necessary that the given food or foods should be cooked; thus to boil eggs soft, this legend isp'laced opposite the second minute to the left of the alarm point, indicating that if the index 15 be placed upon the minute 2, that two minutes will elapse while the eggs are cooking before the index willarrive at the alarm point. Another illustration may more clearly explain the use of the apparatus in this respect. It will require 57 minutes to bake cake, therefore if the index 15 be turned anti-clock-wise until it is opposite the minute 57, 57 minutes will have elapsed before the index reaches the alarm point and therefore the cook will be advised that the cake has. been sufiiciently baked. Other indices and legends, than those shown may, ofv course, be used in connection with my indicator, and the device is capable of manyuses without such indications. I

'It will be noticed that the minute indications on thedial 14 are in the reverse order of those on the usualclock dial. 7 p,

The apparatus is adapted for and may be used to indicate'atthe end of any 'predetermined period of time less than one hour., If the index 15 should be by oversight or accident set back too far it may be moved forward by rotating the usual hand setting knob 50 which moves the hands 18, 19. of theclock-mechanism, accordingly, and

' after the,.index .15, has been placed at the point oflalarmlit will be rendered'the'reby. furtherinoperativq and then the hands'18 and -l -.';.;1 ntiy be jset' back to their former position"'by}means of the knob 50 and the aints the dial in-tlie' manner heretofore' described. I I [While I have-herein shown asingle embodil'nent of my invention for the purpose 5 may beset back again to any separticular exemplification, it must be understood that considerable change may be made from the particular arrangement and disposition of the parts, within the scope of the appended claims.

Having described my invention, claim is 1. In a device of the character described, the combination with a clock time mechanism, of a dial divided into minutes of an hour indicated. by numerals increasing in value in anti-clock-wise direction from a given point; an index movable in coiiperation therewith; means for automatically connecting said indexwith said time mechanism when said index is manually moved anti-clock-wise over said dial from said given point to a selected position; and au tomatically to disconnect said index from said time, mechanism, when. it is returned to said point by said mechanism and means to sound an alarm when said index arrives at said point.

2. In a device of .the character described, the combination of a clock time mechanism and a dial and hands therefor;.of a larger dial surrounding the clock dial, divided into minutes of an hour indicated by numerals increasing in value anti-clock wise from a giveii point; an index movable in cotiperation with the larger dial; means for auto matically connecting said" index with said time mechanism when said index is manually moved anti-clock wise over said larger dial from said given point; and automatically to disconnect said index, from said time mechanism, when it is returned to said point by said mechanism; m'eans'to sound an alarm when said index'arrives at said What I point, and means to lock the index when it given point beyondthe alarmarrives at a point.

3. In a .device of the character described, the combination with a clock time mechanism a dial and hands therefor; another dial divided into minutes of an hour indicated 1 by numerals arranged in the reverse order from that of a clock; an index movably cooperatingwith said latter dial; a designated point on saiddial indicative of alarm;means "for manual ly moving said-indexv over'said dial in anti-clock-wisedirection to an .se-

4.'In a device of the character described,

the. combination [with a clock time mechanism,-a casing, a. clock dial and hands therefar; of a dial frameflc the rear of which said clock casing is connected; an index dial within said frame, divided into minutes of .an hour indicated by numerals arranged in a the reverse order of a clock; an index mov-- ably coiiperating therewith and having'its axis substantially within the center ofsaid index dial, said clock dial being positioned at one side of he axis of said index dial; a zone on said mdex dial indlcative of alarm;

another-zone on said index dial indicative ofsilence; .means, automatically to connect sa d index with sa d clock time mechanism,

, when said index is moved anti-clock-wise out of said alarm zone and automatically to disconnect said index from said clock time mechanlsm when it arrives at the alarm zone;

means to produce an alarm whensaid index reaches said alarm zone; and to stop the wheel;

with an said opening alarm when said index is manually moved :intofthe silent zone and means to prevent further manual movement of said index. in

the same direction.

5. In a device of thecharacter described, a pivoted lever carrying a hammer on its free end; a rotatable wheel; means secured to the lever, near its pivotal point for vibrating said lever in cooperation with said another rotatable wheel provided annular flangehaving a notch or opening therein; another lever projecting from the pivotal point of the first named' lever, having a part adapted to pass through to permit the hammer to be to lock said vibratory means 6. In a device of the character described, a pivotal lever carrying ahammer on its free end, to sound an alarm; 'a rotatable toothed wheel; a verge, secured to the lever near its pivotal point for vibrating said lever, in cooperation with said wheel; anotherrotatable wheel provided with an anvibrated and when on either side of said flange.

Lnular, laterally projecting flange having a part normally clock time mechanism;

'having a notch or opening lever, in cooperation with said wheel; a

time mechanism, provided laterally pro ect ng flange therein; another rotated. by said with an} annular,

' Copiesof thispatent may be obtained for adapted to pass arm.

another wheel, to be five cents each, by addressing the Washington, D. 0.

lever, projecting from the pivotal point of the first mentioned lever, and having a laterally deflected part normally in contact with one or the other side of said flange,

through said opening and permit the hammer to be vibrated and to lock said vibratory verge when on either side of said flange.

8.1 na device of the character described, the combination of a rotatable toothed wheel; a pivoted vibrating mechanism, oper atively associated therewith; a hammer arm projecting from said mechanism; a wheel having a flange provided with a slot associated with said device and a control arm secured to said mechanism the terminal d whereof normally lies on one side or the other of the flange of the wheel to restrain said mechanism; said slot when registering with the control arm permitting free move.- ment of the vibrating mechanism.

-9.' In a device of the ch racter described,

the combination with a clock time mechar nism; of an arbor; an index hand carried thereby; wheel, provided with a flange having a notch therein, said notch in substantially the same plane as the index; an alarm mechanism having a restrainingarm, the free end of which nora dial in cooperation therewith; a

secured to said arbor, with v mally rests against either side of said flange I torestrain said alarm mechanism and which releases said alarm mechanism when the notch is in the path of its movement.

10. In a device of the character described, the combination with a clock time mechanism; of an arbor; an index hand carried thereby; a dialin cooperation therewith; a wheel, provided witha flange having a notch therein, secured to said arbor, withsaid notch in substantially index; an alarm mechanism having a re-' straining arm, the free end of which normally rests against either side of said flange the same plane as the to restrain said alarm mechanism and which releases said alarm mechanism when the notch is in the path of of gearing operable when the notch of said wheel is moved out of the path of said arm to connect said arbor with said clock time mechanism and means to disconnect said gearing about -thetime when the notch is moved into register with said restraining In testimony whereof I hereunto "set my' its movement; a train hand in the presenceof two subscribing witv nesses.

In the presence of- Fonnn BAIN,

Many F. ALLEN.

Commissioner of Patents,

BENJAMIN H. JEFFERSON. 

